Machine for truing loom-shuttles



I. ALTMANN. MACHINE ron mums Loo'm SHUTTLES.

Patented Jan. 6, 1920.

APPLICATION FILED OCT-21. I918.

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APPLICATION mm) OCT-21.1918.

Patented 'Jan,-6,192().

a susi Ts -sumgzf 3 SHEETS-SHEET 3-7 J. ALTMANN.

MACHINE FOR mums LO0M SHUTTLES.

APPLICATION FILED OCT-21, I918.-

Patented Jan. 6, 1920 1,327,515& V

K7 1.! {iffy JAKOB AL'IMANN, OF WEESEN, SWITZERLAND.

MACHINE FOR TRUING' LOOlVI-SI-IUTTLES.

Application filed Gctobcr 21, 1918.

To all whom it may concern:

Be it known that I, JAKoB ALTMANN, a citizen of the Swiss Confederation, and residing at \Veesen, St. Gallen, Switzerland, have invented certain new and useful Improvements in Machines for Truing Loom- Shuttles, of which the following is a specification.

The present invention has reference to amachine for truing the running faces or treads of loom shuttles, which in operation, as is well known, wear down more or less unevenly and must be dressed or trued again from time to time to insure easy and accurate running and proper cooperation with the picker motion. This truing operation is now almost exclusively done by hand, which results in inaccuracies, especially as regards the-amount of distance between the pointed extremities of the shuttle and its running faces which, varying in the differ ent shuttles, causes the differently leveled shuttle points to attack the pickers at different points; and which defect is especially noticeable where two pickers are used alternately, in which instance these inaccuracies sum up and eventually cause big holes to be worn out in the picker faces, whichlatter must then prematurely be renewed. The shuttles themselves also suffer thereby and the quality of the goods turned out is likewise detrimentally affected.

The subject of the present invention is a machine which efiectively obviates these drawbacks and allows of quickly and accurately truing-clown worn shuttles.

In order to make my invention more readily understood, I will now describe it in detail with reference to the accompanying drawings, in which Figure 1 represents a vertical section through the machine; Fig. 2 is a side view and Fig. 3 a top view thereof; Fig. 3 shows a detail in section; Fig. 1 is a vertical section through a somewhat modified construction; Fig. 5 is a top view and Fig. 6 a side view of a modified shuttle holder; and Fig. 7 represents a detail of this holder.

Similar letters of reference indicate corresponding parts in the several views.

In the construction according to Figs. 1 to 3, there is horizontally journaled in the machine upright 1 the shaft 1 to which is keyed the drive pulley 2 and which supports at its outer extremity the grinding and polishing wheel 1 and at its inner extremity the Specification of Letters Patent.

Patented Jan. 6, 1920.

Serial No. 258,997.

face-milling cutter 3. The wheel 4 serves, for working on the pointed extremities of the shuttle W. From the. machine upright lextends laterally the bracket arm 5 terminating in an internally threaded head5 with which cooperates a correspondingly threadedspindle 6, a hand wheel H serving to relatively raise or lower the spindle and limit its relative displacement. This spindle 6 supports a bed 7 for a slide 8 which is adapted to be moved in a plane parallel to the cutting tool axis and which can be ad justed relative to the tool by manipulation of the crank handle 9. A rod 9 operated by the crank, is threaded to engage a threaded projection depending from the slide, to adjust the slide. The slide 8 in turn serves as bed for the transverse slide 10, which can be reciprocated horizontally in front of the cutter by means of the rigid handle 14: (Figs. 2 and The transverse slide 10 carries means for mounting the shuttle W, comprising oppositely disposed supportingmenr bers 11 and 11, the former clamplng a smooth seat pin 12 and the latter adjustably supporting the threaded seat pin 13, between which two seat pins the shuttle to be operated on is suspended, the shuttle points entering the respective seats of the pins, as shown.

For the proper adjustment of the shuttle relative to the cutting tool there is provided a U-shaped rest member or fence 16, adjustably securableto the slide 10 by the wing nut 15. Since the side faces of the shuttles are rarely parallel to one another, only the one limb 16 of the U-member 16 extends strictly rectangularly from the bottom portion, while the other limb 16" extends slightly obliquely thereto, for the purpose of correspondingly tilting the contacting shuttle and presenting the respective face or tread thereof to the cutter in proper, i. e. strictly parallel (in this instance vertical) position. In order to still further assure the position of the shuttle during the truing operation an intermediate plate 16 and an angle piece 16 may be suitably secured to the U-member, as shown in vertical crosssection in Fig. 3 In an eye block 17 extending from the machine upright 1 is secured the rest 18 for supporting the hand of the operator during the grinding and polishing of the shuttle points.

The machine construction according to Fig. 4' mainly differs from the one just described by the employment of a cylindrical cutting tool 21 operating in a horizontal plane, and by the absence of the slide 8. The vertically adjustable spindle 6 terminates in a bed 7 for the transverse slide 10. A; substantially T-shaped support 19 is secured to this slide by a wing nut 15 with capability of relative vertical displacement, and the horizontal portion 19 thereof serves to support the shuttle and prevents its inadvertent displacement during the truing operation. For strictly parallelly presen ing the inclined face of the shuttle to the operating tool, which in this instance means in horizontal position, an additional shuttle supporting plate 20 having a slightly inclined surface is used, which is superimposed upon the horizontal portion 19 of the support member 19 and retained thereon in suitable manner, for instance by pins 20, which depend from the plate 20, entering corresponding bores in the part 19.

In the Figs. 5, 6 and 7 is illustrated a constructional modification of the means for operatively mounting the shuttle in a machine employing a cylindrical cutter, such as described with reference to Fig. 4L; To the slide 10 is adjustably secured a support 22 in which is journaled the crank shaft 23, which can be rotated by means of the handle 24 and can be clampingly locked by manipulation of the lever handle 25. pin 26 of the crank shaft 23 is adjustably secured a shuttle rest or fence 2'? intended to operatively contact with the underside of the shuttle. For properly presenting the inclined face or tread of the shuttle to the cutter there is provided an additional rest member 29 having an inclined shuttle supporting face 30 (Fig. 7), which is secured to the rest 27 in suitable manner, for instance by pins depending from the underside of rest 29 engaging in bores 28, 28 correspondthe shuttle into close contact therewith, and

is then locked by tightening the wing nut 15; the threaded seat pin 13 is then screwed up tight; the hand wheel H is manipulated and the shuttle is lifted thereby to the proper position relative to the cutting tool 3 and is then shifted up close to the toolby manipu-' lation of the handle 9 until tool and shuttle face are in operative contact. The tool is then'set in motion and the shuttle is reciprocated in front of the tool, and always in operative contact therewith. by manipulation of the handle 14 until the shuttle face is properly dressed again, the feed of the To the crank 7 shuttle support toward the tool keeping step with the removal of shuttle waste material.

For operating on an inclined shuttle face the angularly extending limb 16 of the U- rest 16 is brought into operative contact with the shuttle, which correspondingly slightly tilts the shuttle, so that the normally inclined shuttle face is now presented to the cutter in proper parallel position.

In the modification according to Fig. 1 the shuttle is loosely suspended between the point seats and. the rest member 19 (with or without the additional members 20) is lifted until it contacts with the shuttle, in which position it is then locked by the tightening of the wing nut 15'. moved up to the cutter 21 by manipulation of the hand wheelltl, and the faulty shuttle face is then operatedon by reciprocation of the transverse slide 10 in front of the rotating cutter, after the seat pin 13 has been tightened, as above described.

In the constructional modification illustrated in Fig. 4f in combination with the shuttle support according to Figs. 5, 6 and 7, the shuttle is mounted between the seat pins 12 and 13 and the crank shaft 23 is rotated by manipulation of the lever handle 2% until the shuttle rest plate 27 is lifted into operative contact with the stock of the shuttle in which position the mechanism is locked by operation of the clamping lever 25. If an inclined shuttle face is to be operated on the auxiliary rest member 29 is interposed etween the shuttle and the rest member 27. The other operations of the several parts are identical to those just above described.

For handlinga series of shuttles all belonging to the same loom in an absolutely identical manner the shuttle adjusting device can be provided with a suitable indicator.

What I claim is 1. In a machine for truing loom shuttles, in combination with a machine upright and a rotatable cutting tool and a grinding and polishing wheel journaled therein, a bracket arm extending from said upright, an internally threaded head to said bracket arm, an externally threaded spindle operating in said head, hand wheel means for causing and limiting the relative displacement between said head and said spindle, a'bed supported by said spindle, a slide on said bed and crank handle means for causing and lim iting the relative displacement between said bed and said slide axially'of said cutting tool. a transverse slide on said axially movable slide adapted to be reciprocated in front of said cutting tool, adjustable means on said transverse slide for supporting a shuttle at its extremities, and adjustable means on said transverse slide for supporting the stock of the shuttle in such manner that the face to The shuttle is next be operated upon is always presented to the cutting tool in strictly parallel position.

2. In a machine for truing loom shuttles, in combination with a rotary cutter, adjustable means for supporting a shuttle at its eX- treinities, means for parallelly presenting the shuttle faces to be operated upon to said cutter, comprising a plate adapted to support the stock of the shuttle, an auxiliary plate having an inclined shuttle supporting face, means for temporarily uniting said two plates, crank means for actuating said shuttle supporting plat-es, comprising a crank pin adj ustably supporting the first said plate, a

crank shaft crankingly operating said crank pin, a lever handle to said crank shaft, and means for clampingly locking said crank shaft in the desired operative position.

3. In a machine for truing shuttles, a

standard, a transverse drive shaft carried thereby, a grinding and polishing Wheel secured to the shaft to rotate in a vertical plane, a vertically adjustable support carried by the standard, a carriage secured to the support and movable horizontally and coaxially toward the Wheel, means to move the carriage, a transverse slide secured to the carriage and movable transversely thereof, means to move the slide, elements secured to the ends of the slide to pivotally receive the ends of the shuttle, a bridge carried by the slide and adjustable transversely thereof, and means carried by the bridge and adapted to engage the stock of the shuttle to present the side of the shuttle parallel to the Wheel.

In testimony whereof I affix my signature.

JAKOB ALTMANN. 

